Hayato and Rin find themselves in danger of committing "indecent coed relations" while trying to stop another couple of students for doing the same thing.
When did you get in here?!
Wann bist du hier reingekommen?!
¡¿Cuánto llevan ahí?!
¡¿Desde cuándo estáis ahí?!
D-Da quanto siete lì?
Desde quando estão aí?!